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package cn.com.gpic.ini.common.util.date;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 时间工具类
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

    public static final String YYYY = "yyyy";

    public static final String YYYY_MM = "yyyy-MM";

    public static final String YYYY_MM_DD = "yyyy-MM-dd";

    public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static final String[] PARSE_PATTERNS = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    public static String formatDate(Date date, Object[] pattern) {
        String formatDate = null;
        if (pattern != null && pattern.length > 0) {
            formatDate = DateFormatUtils.format(date, pattern[0].toString());
        } else {
            formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
        }

        return formatDate;
    }

    public static String formatDateTime(Date date) {
        return formatDate(date, new String[]{"yyyy-MM-dd HH:mm:ss"});
    }

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), PARSE_PATTERNS);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }
}